python grammar toolbook

Some useful grammars in Python

Input

a,b=input().split()
print(a,b) 
## way 2
s=input().split()
a,b=list(map(int,s))
print(a,b)

List

List slice:

Copy:

Tuple

Elements in tuples cannot be altered,while it could be switched into list to do so.

Inner functions are mostly the same between the two data structures.

String

Judge functions(Inner):

Transformer:

查找类方法：

From string to list:

当t转换为list类型之后，可以利用str.join(t)将序列的每个元素用str连接起来

Format格式化

同时也可以先用实际意义的变量名作为占位符，随后format实际上是一个后赋值的操作

字典